title: Temperature dependence of electric-field-induced domain switching in 0.7Pb(Mg1/3Nb2/3)O3-0.3PbTiO3single crystal.
abstract: The influence of temperature on electric-field-induced domain switching of [0 0 1]coriented 0.7Pb(Mg1/3Nb2/3)O3-0.3PbTiO3(PMN-0.3PT) single crystal has been studied. The piezoelectric properties of PMN-0.3PT single crystal change drastically at one critical field at 30 °C and two critical fields at 90 °C corresponding to electric-field-induced domain switching. The domain structures were studied by polarizing light microscopy on the [100]csurface under the electric field applied along [001]cdirection. The PMN-0.3PT single crystal exhibits a rapid increase in piezoresponse at 100 V/mm, which is related to R-MAphase transformation. At 90°C, the M and T0 0 1phases coexist at 100 V/mm, while T001mono-domain appears at 300 V/mm. The domain switching process here can be identified as (T100or T010) → M → T001. The experimental results show that the phase state and domain structures of the crystal are closely related to the piezoelectric behaviors.
authors.affiliation: Center for Condensed Matter Science and Technology, Department of Physics, Harbin Institute of Technology, Harbin, Heilongjiang 150080, China.
authors.forename: Zhu
authors.initials: Z
authors.lastname: Wang
authors.forename: Rui
authors.initials: R
authors.lastname: Zhang
authors.forename: Enwei
authors.initials: E
authors.lastname: Sun
authors.forename: Wenwu
authors.initials: W
authors.lastname: Cao
keywords: Ferroelectrics; Phase transformation; Piezoelectric property